Shuttle change



Get. 21

D. L RA SHUTTL HANGE M 3 ShG tsQshaet FiledFeb. 26, 1925 B. D. LIBERA SHUTTLE CHANGE Filed Feb. 26, 1925 3 Sheets-Sheet 3 B. D. LIBERA SHUTTLE CHANGE Filed Feb. 26. 1923 5 Sheets-Shea? Zia H imllllllllllllllllllflllmll Patented Get. 21, 1924.

I errie s.

v BARTOLOMEO DELLA LIBERA, or snvnso sen PIE-THO, ITALY, ASSIGNOR To THE FIRM 'FRATELLISCHWARZENBiOH & co, or snvasosen rrn'rn meLy.

SHUTTLE CHANGE.

Application filed February 26, 1923. SerialNo. 621,390.

To all whom it may concern:

Be it known that I, BAnroLoMno DELLA LIBERA, a subject of the King of Italy, residing at Seveso San Pietro, Italy have invented a certain new and useful Improvement in Shuttle Changes, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a device for changing the shuttle in the batten of weaving looms, in which a shuttle-box may be divided into two super-imposed compartments by a movable partition plate, a switch device being provided in front of the shuttle-box, the said switch (after the shuttle coming from the lower compartment and placed in the path of the picker stick is shot) auto-f matically taking up a position that will allow the shuttle on its return travel to reach I the upper compartment of said shuttle-box which in the meantime has dropped its shuttle into the lower compartment after the movable partition plate has temporarily. taken up a position allowing this second shuttle to drop into the said lower compartment and be shot therefrom.

This device maybe fitted for instance to looms in which two shuttles filled with dif ferent kinds of yarn come alternately into operation. 7 I

The accompanying drawings exemplify a construction according to the present invention.

Fig. 1 is a side elevation of the loom with the batten in one of its end positions.

Fig. 1- is a section on a horizontal plan through a detail.

Fig. 2 is a partial front elevation of the left hand side of the loom.

Fig. 3 is a plan of Fig. 2.

Figs. 4 and 5 are details onan enlarged scale showing the relative position of cerr ta'in movable parts.

Figs. .6 to 9 are explanatory of the workingof the shuttle-changing device.

Fig. 10 is a partial view of the rear of the lay.

Fig. 11 isa side elevation of the front part offthe loom showing the batten in one of its intermediate positions.

.Figs. 12 to 14 illustrate the operative connection between the'shuttle-changing device and the stop-motion of the loom. The gear wheel 1 meshing with the gear a (Fig. 4

e wheel 2 revolves at twice the speed ofthe latter and is keyed to the crank3 oscillating the batten5 abouta horizontal shaft 6 .through a pair of links 4. The somewhat shortshuttle-operating picker stick 7is arranged on one sideofthe loom and isp'rovided with a foot connected to a suitable picker lug 10 by means of a member 9.

The picker lug is fastion the shaift 'll and is periodically operated by the :p'icker'lug shaft of theloom for the purpose of' actuating the picker .stick; the oppositelyarranged picker st-ick12 is illustrated in Figs.

6 to 9.. One of the ,ends o-f a bent rail 13 is secured to .the picker lug '10 of the picker stick 7, the other'end forming the pivot point of a rod 14, the pivot pin of'which is'in"line with the axis of the shaft 6 of the batten.

The other end of the rod 14 is pivoted to'a lever 15 mounted on a support 16 secured to the batten and 'carryinganotherlever '17." *A pin 18 on the lever :15 co-operates' with a cam, face out on the lever 17 the other end of which is secured to a rod 19 mounted in a guide 20 of the batten and operatively connected to a cam member 21 adapted to oscillateon the batten and co-operate with' t-he switch 23 through a pin 22., the pivot 'pinof the said switch being located in a recessiof the batten. Theswitch is fittedwith 'a'leaf spring 23 forming a stop for the cam member 21. An angle piece 24 acts as a stop for the switch when the latter is in its-operative position. Y

The shuttle-box A at one end of the ten carries a partition plate 25 pivoted at 26 and connected to a controlling-lever 29 by the articulation 27, 28. The said controlling lever is mounted onthe shaft 6' of the batten and is operatively connected by means of a link 30 to a lever 31 pivotedon a pin 32 integral with theframe'of'the loom. A spring 33 in tension tendstopull'i the controlling lever 29 towards the batten, so that the roller 34=of the lever 31 is pressed against a doublecam 35 keyed to the shaft an upper and lower shuttle compartment The upper compartment :is pro-T vided on one side with the usual springplate 25 is "oscillated controlled brake member 36 with pivot pin 36 and with an upper, spring-controlled brake lever 37 a spring buffer 38 is also provided for the purpose of receiving the shuttle point. A spring 39 pushes the rod 19 towards the cam member 21. The bent pin is secured to the brake member 36.

1 The shuttle-changing device works as folows:

It will be assumed that the two shuttles I and II are in position in the box A and separated from one another by the partition plate 25 after it has moved inwards (Fig. 6), the batten oscillating backwards. The shuttle I in the lower compartment of the box A is shot by the picker stick 7 at a predetermined time into the oppositely arranged shuttle-box B of the batten a few moments before the switch plate 23 had completely entered in its recess in the batten, the said switch plate being raised thereafter (Fig.7). The forward oscillation of the batten now causes the partition plate 25 to move out of the said batten so that the shuttle II is now deprived of its support. The partition plate at the end of its movement. strikes the bent pin 40 so that the brake member 36 is thrown into its inoper ative position against the action of its spring (Figs. 3, 5, 14); the shuttle II is now set free and drops by gravity into the lower I portion of the box A (Fig. 8). The partitionfplate 25 is now swung into the batten again to receive the shuttle I shot back into the box A by the picker stick 12 and upwardly directed by the switch-plate 23 before reaching the said box A (Fig. 9). The cycle of operations is repeated at every reciprocated oscillation of the batten, the shuttles I-and II alternately replacing one an other.

The switch-plate 23 is operated by the picker lug 10 of the picker stick 7. When the said lug moves upwardly, the rod 19 (while the member 9 is tensioned) is moved backwards against the action of the spring 39 through the parts 13, 14, 15 and the action of the pin 18 on the lever 17, so that the cam member 21 leaves the pin 22 of the switch plate 23. The latter completely enters its recess of the batten by gravity or is moved positively thereinto to the cam member 21 impinging on the leaf spring 23 Owingto the pressure exerted by the said cam member 21 on the said spring 23 the switch plate 23 is kept in the position in which its upper edges are flush with the surface of the path of travel of the shuttle so that the direction of motionof the latter is not altered when. gliding over the switchplate. The picker stick 7 becomes now oper ative for shooting the shuttle ready for that purpose. WVhen the said picker stick 7 resumes its initial position the pin 18 is moved upwardly so that the spring 39 now rendered operative thereby, moves the rod 19 to actuate the cam member 21; the latter engages the pin 22 with its inclined face to raise the switclrplate 23. A weaving-loom fitted with the above described shuttle-changing device may be run at a higher number of revolutions than when the shuttles are alternately replaced by continuously moving drop-box. In the present apparatus the shuttle is changed in the box A when the shuttle just shot is under way to the box B and back; when the said shuttle is back in the box A the second shuttle, which in the meantime became ready in position, may be immediately shot, as there is no further changing movement to be performed.

The following steps are taken in order to cause the shuttlechanging device to co-operate with the stop motion of the loom to render the latter operative when a shuttle fails in its travel or does not complete the latter.

A rod 41 arranged parallel to and under the batten is provided at both its ends with two upwardly extending feeler arms 42 and 43, and carries two strikers 44, one for each shuttle-box. A resilient stem 45 is placed in each of the paths of the strikers 44, the stems 45 being interconnected so that the movement of the one is followed by the other. One of the said stems has a laterally-extending arm carrying a set screw 46 operated by the resilient stems and adapted to operate the resilient stop-motion lever 47 of the loom when the said lever leaves its position of rest, as shown in full lines in Fig. 1 and moves into the position shown in dotted lines, whereby the loom is thrown out of operation. The feeler arm 43 of the rod 41 is within the sphere of action of the spring-loaded brake member 48 of the shuttle-box B; the feeler arm 42 is within the sphere of action of a lever 49.111ounted on the partition plate 25 of the shuttle-box A. A vertical striker-pin. is fitted to the brake member 36.

Assuming a position of the parts in which the batten is swung forwards and the partition plate 25 is in the battenfthe shuttle on entering the upper compartment of the box A pushes back the brake member 36 projecting into its path (Fig. 12), so that the striker pin 50 of the brake memberpresses the lever 49 against the feeler arm 42 (Fig. 13). As a result, the rod 41 is rotated so that the strikers 44 are moved upwards: against the action of springs 51, and on the batten being further oscillated, come in their inoperative position with their free ends above the resilient stems 45. The partition plate begins to'move out of the batten immediately after the shuttle hasleft the lower compartment of the box A so that the lever 49 comes into a position relatively to the parts 50 and 42 so that the'feeler arm 42 is released 14). The strikers 44; ow move dmvnwards and by coming into Contact with stops )2 of the resilient stems 45, the

shuttle as required, the strikers 44 which in the meantime have sunk, remain intheir position and thus release the stop-motion lever 47 through the resilient stems 45 for the purpose of rendering the 100111 inoperatlve. I

' I claim 1. Adevice for changing the shuttle in the batten of a weaving loom, comprising two shuttle boxes on said batten, a movable partition plate in one of said shuttle boxes adapted to divide said shuttle box into two superimposed compartments, switch means provided in front of the latter shuttle box and adapted to cause a returning shuttle to reach the upper of said compartments, means adapted to automatically operate said switch means, means to operate said movable partition plate to permit the shuttle delivered into the upper compartment to drop into the lower compartment, and a shuttle operating device.

2. A device for changing the shuttle in the batten of a weaving loom, comprising two shuttle boxes on said batten, a movable partition plate in one of said shuttle boxes adapted to divide said shuttle box into two superimposed compartments, a switch-plate pivoted in a recess of said batten in front of the latter shuttle box and adapted to cause a returning shuttle to reach the upper of said compartments, means adapted to operate said movable partition plate to permit the shuttle delivered into the upper compartment to drop into the lower compartment, and a device adapted to operate the shuttles and said switch-plate.

3. A device for changing the shuttle in the batten of a weaving loom, comprising two shuttle boxes on said batten, a movable partition plate in one of said shuttle boxes adapted to divide said shuttle box into two superimposed compartments, a switchplate pivoted in a recess of said batten in front of the latter shuttle box and adapted to cause a returning shuttle to reach the upper of said compartments, means adapted to operate said movable partition plate to permit the shuttle delivered into the upper compartment to drop into the lower compartment, a shuttle-operating vdevice, and a link o connection between said ,shuttieoperating device and said switch-plate.

i. A device for changing the shuttle in the batten of a weaving loom, comprising two shuttleboxes on said batten, a movable partition plate in one of said shuttleboxes adapted to dividesaid shuttle box into two superimposed compartments, a switch-plate pivoted in a recess of said batten in front of'tthe latter shuttle box and adapted to cause a returning shuttle to reach the upper of aid compartments, means adapted to operate said movable part tion plateto-permit .the shuttle delivered into the upper compare ment to drop into the lowercompartment, a shuttle operating device, an oscillatlng cam member, a linkinterposed between said oscillating cam member and said shuttle-01ycrating mechanisnnand a pin on said switch plate and co-operatiug with said oscillating cam member for periodically actuating said switch-plate. t

5. A device for changing the shuttle in the batten of a weaving loom, comprising two shut-tlelboxes on said batten, a movable partition plate in one of said shuttle boxes, pivoted to said batten and adapted to divide said shuttle box into two superimposed compartments, switch means provided in front of the latter shuttle box and adapted to cause a returning shuttle to reach the upper of said compartments, means adapted to automatically operate said switch means, means to operate said movable partition plate to permit the shuttle delivered into the upper compartment to drop into the lower compartment, and a shuttlebperating device. 7

6. A device for changing the shuttle in the batten of a weavingloom, comprising two shuttle boxes on said batten, a movable partition plate in one of said shuttle boxes, pivoted to said batten and adapted to'divide said shuttle box into two superimposed compartments, a switch-plate provided in front of the latter shuttle box and adapted to cause a returning shuttle to reach the up.- per of said compartments, a spring loaded brake member adapted to act upon the shuttle shot into the upper compartment, an operative connection between said spring loaded brake member and said partition plate to cause the former to partake of the movement of the partition plate; means adapted to operate said partition plate to permit the shuttle delivered into the upper compartment to'drop into the lower compartment, and a shuttle-operating device.

7. A device for changing the shuttle in the batten of a weaving loom, comprising two shuttle boxes on said batten, a movable partition plate in one of said shuttle boxes, pivoted to said batten and adapted to divide said shuttle box into two superimposed compartments, a switch plate provided in front of the latter shuttle box and adapted to cause a returning shuttle to reach the upper of said compartments, a spring loaded brake member adapted to act upon the shuttle shot into the upper compartment, an operative connection between said spring loaded brake member and said partition plate to cause the former to partake of the movement of the partition plate, means adapted to operate said partition plate to permit the shuttle delivered into the upper compartment to drop into the lower compartment, a shuttleoperating device, a stop-motion device and 7 means operatlvely connected to said brake;

member for actuating said stop-motion device when the shuttle does not correctly reach the upper compartment. 1

8. A device for changing the shuttle in the batten of a weavin loom, comprising two shuttle boxes on sai batten, a movable partition plate in one of said shuttle boxes, pivoted to said batten and adapted to divide said shuttle box into two superimposed compartments, a switch plate provided in front of the latter shuttle box and adapted to cause areturning shuttle to reach the upper of said compartments, a spring loaded brake member adapted to act upon the shuttle shot into the upper compartment, an operative connection between said spring loaded brake member and said partition plate to cause the former to partake of the movement of the partition plate, means adapted to operate said partition plate to permit the shuttle delivered into the upper compartment to drop into the lower com partment, a lever on said partition plate, a strike-pin on said brake member actuating said lever, said lever being adapted to actuate saidstop-motion device when the shuttle does not correctly reach the upper compartment.

In testimony whereof I afiix my signature.

BARTOLOMEO DELLA LIBERA. 

